Green solid-state chemical reduction of graphene oxide supported on a paper substrate

13Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.

Abstract

The reduction of graphene oxide (GO) thin films deposited on substrates is crucial to achieve a technologically useful supported graphene material. However, the well-known thermal reduction process cannot be used with thermally unstable substrates (e.g., plastics and paper), in addition photo-reduction methods are expensive and only capable of reducing the external surface. Therefore, solid-state chemical reduction techniques could become a convenient approach for the full thickness reduction of the GO layers supported on thermally unstable substrates. Here, a novel experimental procedure for quantitative reduction of GO films on paper by a green and low-cost chemical reductant (L-ascorbic acid, L-aa) is proposed. The possibility to have an effective mass transport of the reductant inside the swelled GO solid (gel-phase) deposit was ensured by spraying a reductant solution on the GO film and allowing it to reflux in a closed microenvironment at 50 °C. The GO conversion degree to reduced graphene oxide (r-GO) was evaluated by Fourier transform infrared spectroscopy (FT-IR) in attenuated total reflectance (ATR) mode and X-ray Diffraction (XRD). In addition, morphology and wettability of GO deposits, before and after reduction, were confirmed by digital USB microscopy, scanning electron microscopy (SEM), and contact angle measurements. According to these structural characterizations, the proposed method allows a bulky reduction of the coating but leaves to a GO layer at the interface, that is essential for a good coating-substrate adhesion and this special characteristic is useful for industrial exploitation of the material.

References Powered by Scopus

Electric field in atomically thin carbon films

60549Citations
N/AReaders
Get full text

The rise of graphene

37072Citations
N/AReaders
Get full text

Preparation of Graphitic Oxide

29052Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Optimization of graphene oxide through various Hummers' methods and comparative reduction using green approach

63Citations
N/AReaders
Get full text

A Brief Review: The Use of L-Ascorbic Acid as a Green Reducing Agent of Graphene Oxide

36Citations
N/AReaders
Get full text

Green Carbon Nanostructures for Functional Composite Materials

19Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Longo, A., Palomba, M., & Carotenuto, G. (2020). Green solid-state chemical reduction of graphene oxide supported on a paper substrate. Coatings, 10(7). https://doi.org/10.3390/coatings10070693

Readers over time

‘21‘22‘23‘2400.751.52.253

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 6

100%

Readers' Discipline

Tooltip

Chemical Engineering 2

29%

Engineering 2

29%

Chemistry 2

29%

Agricultural and Biological Sciences 1

14%

Save time finding and organizing research with Mendeley

Sign up for free
0